Review Questions

2.1	Which of the following is not a legal identifier? Select the one correct answer. a2z dipus 52pickup _class ca$h total#
2.2	Which statement is true? Select the one correct answer. new and delete are keywords in the Java language. try , catch , and thrown are keywords in the Java language. static , unsigned , and long are keywords in the Java language. exit , class , and while are keywords in the Java language. return , goto , and default are keywords in the Java language. for , while , and next are keywords in the Java language.
2.3	Is this a complete and legal comment? /* // */ Select the one correct answer. No, the block comment ( /* ... */) is not ended since the single-line comment ( // ... ) comments out the closing part. It is a completely valid comment. The // part is ignored by the compiler. This combination of comments is illegal and the compiler will reject it.